Thread-cutting temple for looms



Sept. 22, 1925. 1,554,719

a n L. ELLISON I HREAD CUTTINGTSMPLE FOR LOOKS Filed June 8. 1925\nvenTor.

B D LenharT Ellison y/w wkw ATTys.

Patented Sept. 22, 1925.

. UNITED STATES ATENT FFICE.

B n LnNHnirr unison, or EASLEY, sourir CAROLINA, nssreivonro sense con;-ronn'rion, or HOPEDALE, MASSACHUSETTS, A CORPORATION or MAINE.

THREAD-CUTTING TEMPLE non LOOMS.

Application filed June 8, 1925. Serial No. 35,556.

T all whom it may concern:

Be it known that I, B D LENHART ELLISON, a citizen of the United States,and

a resident of Easley, county of Pickens, State of South, Carolina, haveinvented an Improvement in Thread-Cutting Temples forLooms, of which thefollowing description, in connection with the accompanying drawing, is aspecification, like characters on the drawing representing like parts.

a This invcntionrelates to the thread cutting temple employed in loomsfor severing the filling ends left extending from the cloth at theselvage. Such instrumentalities usually comprise a movable cutter memherwhich is actuated in one direction by or through the movement of the layand in the opposite direction by a spring. A well known and widely usedform of such a device is shown in the patent to Stimpson #1366334,granted January 18, 1921.

The object of the present invention is to provide a construction whichwill minimize the wear between the actuating spring and the movablecutter member. The spring employed for actuating the movable cuttermember is usually formed of steel wire and mounted or anchored at itsupper end to the temple head, while its lower end is coiled 30 about astud projecting laterally from the movable cutter member. The coils ofthe wire not infrequently wear into the stud to such an extent as tointerfere with the proper operation of the device. This deleterious wearoccurs particularly when the projecting stud is formed of cast'iron, dueto its integrality with the cast iron type of movable cutter member.

The present invention enables the use of the very practical andeflicient wire spring to be maintained and at the same time eliminatesany danger from excessive wear taking place between the spring and thestud by providing a sleeve secured to the lower end of the wire spring,in place of the usual coiled end, which sleeve presents a smooth,cylindrical bearing surface fitting over the stud.

The nature and object of the invention will appear more fully from theaccompanying description and drawings and will be particularly pointedout in the claims.

As the present invention relates only to one feature of the constructionand operation of the thread cutting temple, which otherwise is of aconstruction and'operation well known to those skilled in the art, it isonlynecessary to illustrate and describe in detail the parts directlyconcerned with the invention. 3

The preferred form of construction illustrated is shown in connectionwith a thread cutting loom temple of the type disclosed in theabove-mentioned patent to Stimpson.

In the drawings: 7

Fig. 1 is a side elevationof a temple 'embodying a preferred form of thepresent invention.

Fig. 2 is adetail on a larger scale par tially in transverse crosssection.

The temple, as usual, comprises a head 1, from which extends forwardly ashank 2 mounted to reciprocate yieldingly in the stand 3, which isusually secured to the breast beam of the loom adjacent the path of theselvage of the cloth. The head is provided with a depending heel 4,which is struck by the lay on the beat-up to give the forward bodilymovement to the temple. The thread cutting elements comprise a fixedblade mounted vertically in a slotopening at the rear face of'the templehead and not here shown, and a movable blade with which the presentinvention is particularly concerned. This movable blade com prises abodyportionb, a hooked end 6 having a cutting edge 7 which cooperateswith the fixed blade to sever the filling ends, a depending heel 8 and alaterally projecting stud 9. hen the movable cutter member is of thetype shown in the Stimpson patent above-mentioned, it is formed in itsentirety of cast iron. This cutter member has a reciprocating androcking motion in a slot extending from front to rear through the templehead. The rearward movement of this member is usually effected by aspring and leaves the cutter member normally standing in the positionshown in Fla. 1. The'forward movement, or that movement by which thecutting action is effected is caused by the lay on the beat-up strikingagainst the depending heel 8 and carrying the cutter member forwardlyagainst the action of the spring. This operation is well known andfamiliar to those skilled in the art.

The actuating spring is formed of steel wire 10. The upper end of thisspring is formed into a coil 11 which fits over astud 12 projectinglaterally from the head. The end 13 of the coil 11 is carried rearwardlyand rests upon a shoulder 14 formed on the. head. By this construction,which is that usually employed, the upper end of the spring is mountedupon or anchored to the head.

In the present invention, the lower end of the wire 10 has securedthereto a sleeve. This sleeve 15 is formed of metal and is shownas'having an upwardly projecting shank 16 in which the end of the wire10 is rigidly secured. The sleeve presents a smooth, cylindrical bearingsurface fitting over the stud 9, and this surface is of a length equalto several times the diameter of the wire of the spring 10, thusinsuring a relatively long bearing upon the stud.

It is found in practice that the construction of this inventioneliminates all danger of any substantial amount of wear taking place atthe stud 9 because the sleeve 15 has a bearing fit throughout its lengthon the stud. Thus, even when the stud is formed of cast iron, due to itsintegrality with a cast iron cutter member, the desired results aresecured in a simple, efiicient and practical manner and all objectionsto the use of the otherwise highly -desirable wire spring are removed.

While a specific form of sleeve has been illustrated in which theconnection with the wire of the spring is effected through the medium ofthe upwardly projecting shank 16, it will be recognized that theinvention is not to be restricted to the particular means employed forsecuring the sleeve to the wire of the spring.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is:

1. A thread cutting temple for looms comprising a head, a movable cuttermember mounted in the head and provided with a projecting stud, and awire spring for actuating the cutter member mounted at one end on thehead and having secured to its other end a sleeve presentinga smooth,cylindrical bearing fitting over the stud.

'2. A thread cutting temple for looms comprising a head, a movablecutter member mounted in the head and provided with a projecting stud,and a wire springfor actuating the cutter member mounted at one end onthe head and having secured to its other end and fitting over the stud asleeve presenting a smooth, cylindrical bearing of a length equal toseveral times the diameter of the wire of the spring.

A thread cutting temple for looms comprising a head, a cast iron movablecutter member mounted in the head and provided with an integralprojecting stud, a wire spring for actuating the cutter memberrmountedat one end on the head and having secured to its other end a sleevepresenting a smooth, cylindrical bearing fitting over the stud.

4. A thread cutting temple for looms comprising a head, a cast ironmovable cutter member mounted in the head and provided with an integralprojecting stud, a wire spring for actuating the cutter member mountedat one end on the head and having secured to its other end and fittingover the stud a sleeve presenting a smooth, cylindrical bearing of alength equal to several times the diameter of the wire of the spring. 7

In testimony whereof, I have signed my name to this specification.

B D LENHART ELLISON.

